Home / 15,028.56-20,739.30-8,981.57

Finding the Fourth Proportional to 15,028.56, 20,739.30 and 8,981.57

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Solution

The fourth proportional to 15,028.56, 20,739.30 and 8,981.57 is: 12,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.56 : 20,739.30 = 8,981.57 : x
  2. Step 2: Convert to fraction form
    15,028.56/20,739.30 = 8,981.57/x
  3. Step 3: Cross multiply
    15,028.56x = 20,739.30 × 8,981.57
  4. Step 4: Simplify right side
    15,028.56x = 186,271,371.00
  5. Step 5: Solve for x
    x = 186,271,371.00/15,028.56
  6. Step 6: Final answer
    x = 12,394.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.